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Richetia Iliasii
''Richetia iliasii'' (also called yellow meranti) is a tree in the family Dipterocarpaceae. It is endemic to Borneo, where it grows in Sarawak and Kalimantan. It is a tall tree, growing up to 50 meters in height. It grows in lowland dipterocarp forests, on hillsides and on clay and sedimentary rock, up to 400 meters elevation. The species is subject to habitat loss from forest clearance, and its extent of occurrence (EOO) declined by 80% between 2000 and 2018. The species' habitat loss was greater in Kalimantan than in Sarawak, where some populations grow in protected areas. The species is assessed as critically endangered An IUCN Red List critically endangered (CR or sometimes CE) species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild. As of December 2023, of t ... by the IUCN. Sources iliasii Endemic dipterocarps of Borneo Taxonomy articles created by Polbot Plan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Shaw Ashton
Peter Shaw Ashton (born 27 June 1934) is a British botanist. He is Charles Bullard Professor of Forestry at Harvard University, and director of the Arnold Arboretum there from 1978 to 1987. Born in Boscombe, Bournemouth, England, Ashton received his B.A. in Biology (1956), M.A. in Biology (1960) and Ph.D. Botany (1962) from the University of Cambridge. He has worked for many years on research projects to promote the conservation and sustainable use of tropical forests, and was instrumental in the project by the Center for Tropical Forest Science to formulate a network of Forest Dynamic Plots which are surveyed regularly to sample the health of the forest; he won the Japan Prize for this in 2007. In 1983, Ashton was elected a Fellow of the American Academy of Arts and Sciences The American Academy of Arts and Sciences (The Academy) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extent Of Occurrence
Extent may refer to: Computing * Extent (file systems), a contiguous region of computer storage medium reserved for a file * Extent File System, a discontinued file system implementation named after the contiguous region * Extent, a chunk of storage space logical volume management uses internally to provide various device mappings * Extent, in computer programming, is the period during which a variable has a particular value Other * Extent, a technical description of the wingspan of a bird, bat, or other flying animal * Extent, a writ allowing a creditor to seize or assume temporary ownership of a debtor's property; also, the actual seizure in its execution * Map extent A map extent is the portion of area of a region shown in a map. The limits of a map extent are defined in the coordinate system of the map. In Western culture, map extents usually have a rectangular shape, so they are defined with a minimum and ..., the portion of a region shown in a map See also * Ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Peter Shaw Ashton
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Described In 1967
Plants are the eukaryotes that form the Kingdom (biology), kingdom Plantae; they are predominantly Photosynthesis, photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll. Exceptions are parasitic plants that have lost the genes for chlorophyll and photosynthesis, and obtain their energy from other plants or fungi. Most plants are multicellular organism, multicellular, except for some green algae. Historically, as in Aristotle's biology, the plant kingdom encompassed all living things that were not animals, and included algae and fungi. Definitions have narrowed since then; current definitions exclude fungi and some of the algae. By the definition used in this article, plants form the clade Viridiplantae (green plants), which consists of the green algae and the embryophytes or land plants (hornworts, liverworts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Articles Created By Polbot
280px, Generalized scheme of taxonomy Taxonomy is a practice and science concerned with classification or categorization. Typically, there are two parts to it: the development of an underlying scheme of classes (a taxonomy) and the allocation of things to the classes (classification). Originally, taxonomy referred only to the classification of organisms on the basis of shared characteristics. Today it also has a more general sense. It may refer to the classification of things or concepts, as well as to the principles underlying such work. Thus a taxonomy can be used to organize species, documents, videos or anything else. A taxonomy organizes taxonomic units known as "taxa" (singular "taxon"). Many are hierarchies. One function of a taxonomy is to help users more easily find what they are searching for. This may be effected in ways that include a library classification system and a search engine taxonomy. Etymology The word was coined in 1813 by the Swiss botanist A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Dipterocarps Of Borneo
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becomin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richetia
''Richetia'' is a genus of flowering plants in the family Dipterocarpaceae. It includes 33 species of trees native to Peninsular Thailand, Peninsular Malaysia, Sumatra, Borneo, and the Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot .... The genus corresponds to the 'yellow meranti' group in the Dipterocarp timber classification system.Ashton, P.S., Heckenhauer, J. Tribe Shoreae (Dipterocarpaceae subfamily Dipterocarpoideae) Finally Dissected. ''Kew Bulletin'' 77, 885–903 (2022). https://doi.org/10.1007/s12225-022-10057-w Species 33 species are accepted. *'' Richetia acuminatissima'' *'' Richetia alutacea'' *'' Richetia angustifolia'' *'' Richetia bakoensis'' *'' Richetia balanocarpoides'' *'' Richetia blumutensis'' *'' Richetia chaiana'' *'' Richetia collari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Critically-endangered Species
An IUCN Red List critically endangered (CR or sometimes CE) species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild. As of December 2023, of the 157,190 species currently on the IUCN Red List, 9,760 of those are listed as critically endangered, with 1,302 being possibly extinct and 67 possibly extinct in the wild. The IUCN Red List provides the public with information regarding the conservation status of animal, fungi, and plant species. It divides various species into seven different categories of conservation that are based on habitat range, population size, habitat, threats, etc. Each category represents a different level of global extinction risk. Species that are considered to be critically endangered are placed within the "Threatened" category. As the IUCN Red List does not consider a species extinct until extensive targeted surveys have been conducted, species that are pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Loss
Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease in biodiversity and Abundance (ecology), species numbers. Habitat destruction is in fact the leading cause of biodiversity loss and species extinction worldwide. Humans contribute to habitat destruction through the Exploitation of natural resources, use of natural resources, agriculture, industrial production and urbanization (urban sprawl). Other activities include mining, logging and trawling. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introduced species, introduction of invasive species, ecosystem nutrient depletion, water pollution, water and noise pollution are some examples. Loss of habitat can be preceded by an initial habitat fragmentation. Fragmentation and lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Of The World Online
Plants of the World Online (POWO) is an online taxonomic database published by the Royal Botanic Gardens, Kew. History Following the Convention on Biological Diversity, the Royal Botanic Gardens in Kew launched Plants of the World Online in March 2017 with the goal of creating an exhaustive online database of all seed-bearing plants worldwide. (Govaerts wrongly speaks of "Convention for Botanical Diversity (CBD)). The initial focus was on tropical African flora, particularly flora ''Zambesiaca'', flora of West and East Tropical Africa. Since March 2024, the website has displayed AI-generated predictions of the extinction risk for each plant. Description The database uses the same taxonomical source as the International Plant Names Index, which is the World Checklist of Vascular Plants (WCVP). The database contains information on the world's flora gathered from 250 years of botanical research. It aims to make available data from projects that no longer have an online ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borneo Lowland Rain Forests
The Borneo lowland rain forests is an ecoregion, within the tropical and subtropical moist broadleaf forests biome, of the large island of Borneo in Southeast Asia. It supports approximately 15,000 plant species, 380 bird species and several mammal species. The Borneo lowland rain forests is diminishing due to logging, hunting and conversion to commercial land use. Location and description The Borneo lowland rain forests cover an area of 428,438 square kilometers, about 57% of Borneo's land area. They cover most of the island below 1000 meters elevation. Borneo is divided between Indonesia, Malaysia, and Brunei, and the lowland rainforests extend into all three countries. Other ecoregions cover portions of lowland Borneo, including the Borneo peat swamp forests, Southwest Borneo freshwater swamp forests, and Sundaland heath forests. These other lowland ecoregions formed over specific soil conditions, and are home to distinct communities of plants and animals. The Sunda Shelf m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kalimantan
Kalimantan (; ) is the Indonesian portion of the island of Borneo. It constitutes 73% of the island's area, and consists of the provinces of Central Kalimantan, East Kalimantan, North Kalimantan, South Kalimantan, and West Kalimantan. The non-Indonesian parts of Borneo are Brunei and East Malaysia. In Indonesia the whole island of Borneo is also called "Kalimantan". In 2019, President of Indonesia Joko Widodo proposed that Capital of Indonesia, Indonesia's capital be moved to Kalimantan. The People's Consultative Assembly approved the Law on State Capital in January 2022. The future capital, Nusantara (city), Nusantara, is a planned city that will be carved out of East Kalimantan. A government official said construction is expected to be fully complete by 2045, but the unfinished capital officially celebrated Indonesian Independence Day for the first time and it was scheduled to be inaugurated as the capital city on 17 August 2024, but the move did not take place due to delays of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
